So... on the first row you'll do this:
Knit 7, knit 3 stitches together, knit 7, knit 3 stitches together, knit 7, knit 3 stitches together, knit 7, knit 3 stitches together -- by the end of this row, you should have 32 stitches on the needle.
Row two: purl
For row 3: knit 5, knit 3 stitches together (do these two things 3 more times) -- by the end of ths you should have 24 stitches on the needle.
Row four: purl